Saw horse



FIG. 1 is an isometric view of a saw horse showing my new design;

FIG. 2 is an end elevational view thereof opposite to that shown in FIG. 1;

FIG. 3 is a side elevational view thereof opposite to that shown in FIG. 1;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a saw horse, as shown. 